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I have got a memory foam mattress but was thinking of changing back to a sprung one
I still get sciatica and lower back stiffness (had it before the memory foam mattress)
I have noticed that waking up with a dead arm happens less with foam, its just a bit hot. I am also thinking that foam probably isn't the best as it must be a little toxic.
I know I can go to a shop and try lying down on some, but its not the same as trying to sleep for 8 hours on one
I've just ordered a new mattress from ikea ,you get 90 day return if you don't like it ,sounds fair to me . Ps just ordered a foam mattress 😐
...we went to the bed store and spent an afternoon trawled round the beds & found the only one that felt any "different" or comfortable when lay on for 5 minutes was the memory foam one.
We bought one, no it wasn't cheap & no it didn't fix our back issue (we both suffer) but it is really very comfortable and neither of us regret buying it (2 years on).
TBH I found to fix my back issues I have to stretch my back most nights and do a number of core exercises (again I suffered from sciatica and lower back stiffness). The bed has helped significantly but is a hindrance if you have an attack and can't move your hips well, as you sink into the memory foam & can't bounce to manoeuvre out...
IIRC we had 40 days to return any mattress we purchased
I am also thinking that foam probably isn't the best as it must be a little toxic
I'd not recommend eating a memory foam mattress. It's likely to do you no good even though it won't poison you. But sleeping on one is unlikely to be too deadly. Especially when you compare the puny exposure to any residual manufacturing chemicals in it with walking alongside a busy road or eating dirt. Most mattresses will have flame retardant treatments on & in them that may be toxic in high concentrations (think manufacturing storage) but at normal levels they shouldn't harm you.
I'd be sceptical of any claims of mattresses to 'fix' back problems related to 'slipped' discs. Even surgery doesn't seem to have compelling [url= http://summaries.cochrane.org/CD001350/the-effects-of-surgical-treatments-for-individuals-with-slipped-lumbar-discs ]evidence[/url] for its curative abilities. In the book "A Guide to the Prevention and Treatment of Back Pain" by Joshua Ra, Dr Raj rates 'expensive mattresses...' as 'not very helpful'. I'd agree. Get something that's comfortable to do bed things on and deal with back pain when it turns up.
Just ordered a sealey from discount beds in Sheffield. It's two thirds sprung and then one third foam. Had this configuration for eight years since herniating a disc. The only thing that sorted my back was Pilates and change of job from desk to stood all day. Mattress helped though. Go and lay on some, take your time.